This website is not supported on Internet Explorer 8. Please update Internet Explorer or use another browser. Click here for updates.

Stay In Touch!
Stay In Touch!

Universal Stay In Touch

  • This field is for validation purposes and should be left unchanged.

info@primexprocess.com

+1 215.340.3648

Navigation Down Arrow

Tucson Electric Power operates four generating units at the Springerville Generating Station (SGS) with a combined generating capacity of 1560 MW. Compared with similar facilities, reagent consumption at SGS was 30-50% higher than average with related challenges in material handling and corrosion issues.

TEP engaged Primex to improve dry flue gas desulfurization (DFGD) performance at SGS including onsite evaluations, personnel interviews, sample analysis, and historical data analysis. Additionally, Primex conducts site visits to interview personnel, design information and historical operating data, analyzing the information to identify key factors affecting scrubber performance.

Evaluations revealed substantial improvement opportunities in efficiency, safety, and reliability. Primex recommended strategic and prioritized actions expected to greatly reduce reagent consumption, reducing flyash disposal and reagent expenses by an estimated $5-8 million per year. Additional benefits are expected in operations, reliability, and life expectancy of critical DFGD system components.

Success factors depended on clear goals and close collaboration between TEP and Primex personnel along with a comprehensive understanding of best-practice standards, secure access to plant data, advanced diagnostics with quantitative modeling and simulation techniques.

Read Full Case Study

SITUATION

Tucson Electric Power operates four generating units at the Springerville Generating Station (SGS) in Springerville, AZ with a combined generating capacity of 1560 MW. Each unit is equipped with a dry flue gas desulfurization (DFGD) system including onsite reagent preparation equipment, spray dry absorbers and rotary atomizers. A comparison of SGS with similar facilities showed reagent consumption was 30-50% higher than average with related challenges in material handling and corrosion issues.

SOLUTION

TEP engaged Primex to identify opportunities and recommend related actions to improve DFGD performance in all units at SGS. The scope of work included onsite evaluation, sample analysis, personnel interviews, historical data analysis, and modeling of the existing process to evaluate prospective changes. Primex also visited the site to interview plant personnel and acquire samples, design information and historical operating data. This information was subsequently analyzed to identify key factors affecting scrubber performance and related opportunities at SGS.

RESULTS

The performance evaluation by Primex revealed substantial improvement opportunities not only in efficiency but also safety and reliability. Taking a strategic program approach, Primex recommended a series of prioritized actions expected to reduce reagent consumption by 15- 25% in Units 1 and 2 and 20-30% in Units 3 and 4. The combined reduction in expenditure for flyash disposal and reagent is estimated at $5-8 million per year. Additional benefits are expected in operating knowledge and workload, reliability and life expectancy of critical DFGD system components.

CRITICAL SUCCESS FACTORS

Success of the performance evaluation process at SGS depended on clear goals and close collaboration between TEP and Primex personnel. Other critical factors included a comprehensive understanding of best-practice standards, secure access to plant data, advanced diagnostics with quantitative modeling and simulation techniques.

“Primex has an outstanding reputation in the industry and they came through for us at Springerville. After the evaluation phase was complete, we retained Primex to support program implementation and look forward to a successful outcome this year”

– Mark Mansfield, Vice President of Energy Resources, Tucson Electric Power Corp.